新疆库鲁克塔格新元古代火山岩地质-地球化学特征及构造意义  

GEOLOGY-GEOCHEMISTRY CHARACTERISTICS AND ITS TECTONIC SIGNIFICANCE OF THE NEOPROTEROZIC VOLCANIC ROCK IN QURUQTAGH ,XINJIANG

作　　者：展新忠[1] 郭瑞清[1] 张晓帆[1] 孙宝生[1] 郭寅[1] 秦切[1] 

机构地区：[1]新疆大学地质与勘查工程学院,新疆乌鲁木齐830046

出　　处：《新疆地质》2010年第1期22-27,共6页Xinjiang Geology

基　　金：国家973项目"中亚造山带大陆动力学过程与成矿作用"(2007CB411301);新疆大学博士科研启动基金(070384)共同资助

摘　　要：库鲁克塔格地区新元古代火山岩十分发育,从早南华世到晚震旦世均有分布.火山岩从老到新可分为贝义西、扎摩克提、水泉3个喷发期,对各期火山岩主量、微量元素及稀土元素地球化学研究表明,各喷发期火山岩均形成于大陆裂谷环境.本区火山岩的形成,是塔里木运动的重要佐证,是Rodinia超大陆裂解事件的岩石记录,揭示了本区Rodinia超大陆裂解始于早南华世.The Neoproterozoic volcanic rock from Early Nanhua to Neosinian are widely distributed in the area of Quruqtagh.The Neoproterozoic volcanic rock contains Beiyixi,Zamoketi and Shuiquan erupt era.The geochemistry characteristics of their major element,trace element and Ree element of the Neoproterozoic volcanic rock reveal that each volcanic rock is average formed in a continental-rift environment. The formation of Neoproterozoic volcanic rock is the important evidence of the Tarim movement and a petrological record of the breakup event of the supercontinent Rodinia, which reveals the breakup of the supercontinent Rodinia in Tarim block started in Early Nanhua.

关 键 词：库鲁克塔格 新元古代 火山岩 地球化学 构造演化 

分 类 号：P588.14[天文地球—岩石学]